Home / 21,288,445.40-29,378,066.41-11,498,889.52

Finding the Fourth Proportional to 21,288,445.40, 29,378,066.41 and 11,498,889.52

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Solution

The fourth proportional to 21,288,445.40, 29,378,066.41 and 11,498,889.52 is: 15,868,473.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,288,445.40 : 29,378,066.41 = 11,498,889.52 : x
  2. Step 2: Convert to fraction form
    21,288,445.40/29,378,066.41 = 11,498,889.52/x
  3. Step 3: Cross multiply
    21,288,445.40x = 29,378,066.41 × 11,498,889.52
  4. Step 4: Simplify right side
    21,288,445.40x = 337,815,139,959,813
  5. Step 5: Solve for x
    x = 337,815,139,959,813/21,288,445.40
  6. Step 6: Final answer
    x = 15,868,473.89

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.